turns the baseturf var into a part time list (#33705)

code/game/turfs/space/space.dm

@@ -118,7 +118,7 @@
 				qdel(L)
 				playsound(src, 'sound/weapons/genhit.ogg', 50, 1)
 				to_chat(user, "<span class='notice'>You build a floor.</span>")
-				ChangeTurf(/turf/open/floor/plating)
+				PlaceOnTop(/turf/open/floor/plating)
 			else
 				to_chat(user, "<span class='warning'>You need one floor tile to build a floor!</span>")
 		else
@@ -192,7 +192,7 @@
 	switch(passed_mode)
 		if(RCD_FLOORWALL)
 			to_chat(user, "<span class='notice'>You build a floor.</span>")
-			ChangeTurf(/turf/open/floor/plating)
+			PlaceOnTop(/turf/open/floor/plating)
 			return TRUE
 	return FALSE
 

code/game/turfs/space/transit.dm

@@ -1,7 +1,7 @@
 /turf/open/space/transit
 	icon_state = "black"
 	dir = SOUTH
-	baseturf = /turf/open/space/transit
+	baseturfs = /turf/open/space/transit
 	flags_1 = NOJAUNT_1 //This line goes out to every wizard that ever managed to escape the den. I'm sorry.
 	explosion_block = INFINITY